Geochemical evidence for interaction between oceanic crust and lithospheric mantle in the origin of Cenozoic continental basalts in east-central China

Zhang, Junjun; Zheng, Yong‐Fei; Zhao, Zi‐Fu

doi:10.1016/j.lithos.2009.01.006

Cited by 231 publications

(171 citation statements)

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“…However, this study and other recent investigations (Zhang et al 2009;Zeng et al 2011;Xu et al 2012) show that this is not always the case. Instead, the involvement of pyroxenite in the source is rather common in the genesis of Cenozoic basalts.…”

Section: Implications For the Lithospheric Evolution In Eastern Ncccontrasting

confidence: 78%

“…The mafic melts with the low e Nd(t) (\0) are inferred to be derived from enriched lithospheric mantle, while the melts with the high e Nd(t) ([0) are from the asthenospheric mantle (e.g., Xu 2001). The e Nd(t) values of Cenozoic basalts in Chifeng area range from ?1.6 to ?4.4 (Han et al 1999), similar to those of Cenozoic basalts in eastern NCC (e.g., Xu 2001;Zhang et al 2009;Zeng et al 2010Zeng et al , 2011Xu et al 2012), thus favoring an asthenospheric origin. More importantly, geophysical investigations have showed that the present lithosphere thickness beneath Chifeng area is *100 km (Ma 1987;Chen 2010), in agreement with the inferred melting depth of Xindian basalts (*3.0 GPa; Fig.…”

Section: Discussionmentioning

confidence: 55%

“…In view of the normal mantle potential temperature in the eastern NCC during Cenozoic, this temporal variation of basalts was explained as a result of lithospheric thickening during Cenozoic (Menzies and Xu 1998;Xu 2001Xu , 2007. However, recent studies on Cenozoic basalts from Shandong province, Subei basin and Shuangliao, eastern NCC, showed that basalts from these areas were pyroxenite melts (Chen et al 2009;Zhang et al 2009;Wang et al 2011;Zeng et al 2011;Xu et al 2012), thus casting doubt on the previous assumption of peridotite melts and assessment on variation in lithospheric thickness. Moreover, these existing studies were mainly focused on alkali basalts, but tholeiitic basalts were paid less attention, possibly due to their limited distribution in these areas.…”

Section: Introductionmentioning

confidence: 96%

“…Moreover, these existing studies were mainly focused on alkali basalts, but tholeiitic basalts were paid less attention, possibly due to their limited distribution in these areas. Besides, basalts of several volcanoes in all these recent studies were investigated together, and fractional crystallization was poorly constrained in a single volcano, due to little variation of major elements of bulk rocks (e.g., Zhang et al 2009;Zeng et al 2011). Last but not least, H 2 O is important for magma formation (e.g., Kushiro 1968Kushiro , 1969Kushiro , 1972Mysen et al 1980;Gaetani and Grove 1998;Falloon and Danyushevsky 2000;Asimow and Langmuir 2003;Asimow et al 2004;Parman and Grove 2004;Liu et al 2006;Wood and Turner 2009).…”

Section: Introductionmentioning

confidence: 99%

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Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Zhang

Qian

et al. 2012

Contrib Mineral Petrol

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The geochemical characteristics of melt inclusions and their host olivines provide important information on the processes that create magmas and the nature of their mantle and crustal source regions. We report chemical compositions of melt inclusions, their host olivines and bulk rocks of Xindian basalts in Chifeng area, North China Craton. Compositions of both bulk rocks and melt inclusions are tholeiitic. Based on petrographic observations and compositional variation of melt inclusions, the crystallizing sequence of Xindian basalts is as follows: olivine (at MgO [ *5.5 wt%), plagioclase (beginning at MgO = *5.5 wt%), clinopyroxene and ilmenite (at MgO \ 5.0 wt%). High Ni contents and Fe/Mn ratios, and low Ca and Mn contents in olivine phenocrysts, combining with low CaO contents of relatively high MgO melt inclusions (MgO [ 6 wt%), indicate that Xindian basalts are possibly derived from a pyroxenite source rather than a peridotite source. In the CS-MS-A diagram, all the high MgO melt inclusions (MgO [ 6.0 wt%) project in the field between garnet ? clinopyroxene ? liquid and garnet ? clinopyroxene ? orthopyroxene ? liquid near 3.0 GPa, further suggesting that residual minerals are mainly garnet and clinopyroxene, with possible presence of orthopyroxene, but without olivine. Modeling calculations using MELTS show that the water content of Xindian basalts is 0.3-0.7 wt% at MgO = 8.13 wt%. Using 20-25 % of partial melting estimated by moderately incompatible element ratios, the water content in the source of Xindian basalts is inferred to be C450 ppm, much higher than 6-85 ppm in dry lithospheric mantle. The melting depth is inferred to be *3.0 GPa, much deeper than that of tholeiitic lavas (\2.0 GPa), assuming a peridotite source with a normal mantle potential temperature. Such melting depth is virtually equal to the thickness of lithosphere beneath Chifeng area (*100 km), suggesting that Xindian basalts are derived from the asthenospheric mantle, if the lithospheric lid effect model is assumed.

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Section: Implications For the Lithospheric Evolution In Eastern Ncccontrasting

confidence: 78%

Section: Discussionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Zhang

Qian

et al. 2012

Contrib Mineral Petrol

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“…이를 유발한 원동력에 관한 모델 역시 다양하다. 요약하면 맨틀 플룸(plume) (Wilde et al, 2003;Deng et al, 2005), 인도판과 유라시아판의 충돌 (Menzies et al, 1993), 북중국지괴와 남중국지 괴의 충돌 (Menzies and Xu, 1998;Gao et al, 2002;Xu et al, 2006) 및 태평양판의 섭입 (Griffin et al, 1998;Xu, 2001Xu, , 2014Wu et al, 2005;Sun et al, 2007;Zhang et al, 2009;Xu et al, 2013) 등으로 정리할 수 있다. 북중국지괴 동측에 분 포하는 광범위한 백악기초기 화성활동은 이러한 암석 권맨틀의 변화과정과 연계되어 있는 것으로 추정된다 Chen et al, 2004;Wu et al, 2005).…”

Section: 핵심어: 백악기초기 동중국 경상분지 현무암 암석권맨틀unclassified

Petrogenesis of Early Cretaceous Magmatism in Eastern China and the Gyeongsang Basin, Korean Peninsula

Choi¹

2016

The Journal of the Petrological Society of Korea

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핵심어: 백악기초기, 동중국, 경상분지, 현무암, 암석권맨틀Abstract: Geochemical characteristics of the Early Cretaceous igneous rocks from eastern China and the Gyeongsang Basin, Korean Peninsula has been summarized. They have wide range of lithological variation with extrusive picrite-basalt-andesite-trachyte-rhyolite and lamprophyre, and intrusive gabbro-dioritemonzonite-syenite-granite and diabase in eastern China, mostly belonging to the high-K calc-alkaline or shoshonitic series. The volcanic rocks intercalated with the Hayang Group sedimentary assemblages in the Gyeongsang basin are high-K to shoshonitic basaltic trachyandesites. The Early Cretaceous basaltic rocks studied mostly fall within the field of within-plate basalts on the Zr/Y-Zr and Nb-Zr-Y tectonic discrimination diagrams. On a Sr-Nd isotope correlation diagram, basaltic rocks from the North China block (NCB) and the continent-continent collision zone (CZ) between the North and South China blocks plot into the enriched lower right quadrant along the extension of the mantle array. The initial Pb(t) correlation. Meanwhile, the SCB basaltic

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Geochemical insights into the role of metasomatic hornblendite in generating alkali basalts

Dai

Zhao

Zheng

2014

Geochem. Geophys. Geosyst.

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Experimental petrology suggested the role of hornblendite in generating alkali basalt. This mechanism is confirmed by an integrated study of major-trace elements and radiogenic isotopes for Mesozoic alkali basalts from the Qinling orogen in China. The alkali basalts have high contents of MgO (4.8-11.1 wt %, Mg# 5 47-69), Na 2 O 1 K 2 O (2.9-5.4 wt %), TiO 2 (2.0-3.1 wt %) but low content of SiO 2 (41.4-49.6 wt %), which are generally silica-undersaturated with normative minerals of nepheline and olivine. They exhibit OIB-like trace element distribution patterns, with enrichment of LILE and LREE but no depletion of HFSE relative to the primitive mantle. They also show relatively depleted Sr-Nd-Hf isotope compositions, with low initial 87 Sr/ 86 Sr ratios of 0.7028-0.7058, positive e Nd (t) values of 4.0-9.8 and e Hf (t) values of 8.8-13.5 for whole-rock, and positive e Hf (t) values of 5.2-16.4 for zircon. Such element and isotope features indicate their origination from the juvenile subcontinental lithospheric mantle (SCLM) source with involvement of crustal components. The alkali basalts generally have high K 2 O/Na 2 O ratios, and high K 2 O and TiO 2 contents, suggesting their derivation from partial melting of hornblendite-rich mantle lithology. They also exhibit variable K/La and Ti/La ratios that are correlated with (La/Yb) N ratios, indicating a geochemical heterogeneity of the SCLM source. Taken together, all the above geochemical features can be accounted for by partial melting of a hornblendite-rich SCLM source. The hornblendite would be generated by reaction of the juvenile SCLM wedge peridotite with hydrous felsic melts derived from subducted Palaeotethyan oceanic crust at the slab-mantle interface in the subduction channel. Therefore, orogenic alkali basalts record recycling of the subducted fossil oceanic crust, and the metasomatic hornblendite is an important lithology in local SCLM domains above fossil subduction channels.

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Geochemical evidence for interaction between oceanic crust and lithospheric mantle in the origin of Cenozoic continental basalts in east-central China

Cited by 231 publications

References 144 publications

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Petrogenesis of Early Cretaceous Magmatism in Eastern China and the Gyeongsang Basin, Korean Peninsula

Geochemical insights into the role of metasomatic hornblendite in generating alkali basalts

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